Install doorknobs with this Strike and Latch Template. It’s a professional quality kit that makes it easy to mortise latch and strike plate openings with any ¼ in. collet router. Various settings for strike and latch plate sizes ensure precise results. Strike plate sizes include 1-1/8 x 2-3/4 in., 1-1/2 x 2-1/4 in., and 1-1/2 x 2-3/4 in. Latch plate sizes included are 1 x 2-1/4 in., 1-1/8 x 2-1/4 in., and 1-1/8 x 2-3/4 in. This template is compatible with door thicknesses of 1-3/8 in. and 1-3/4 in. It comes with a high-speed steel router bit, bearings, brads, and instruction manual.